Missouri (below Holter) Fishing Forecast
The Missouri (below Holter) in Montana behaves like a classic tailwater: cold, predictable releases that stretch the trout season when freestone neighbors run warm or muddy. Anglers target rainbow trout and brown trout across riffles, seams, and undercut banks in this region, with prime dry-fly and nymph windows typically clustering in late June through September. USGS gauge 06108500 tracks live flow and temperature for planning wade or float days. Local tactics angle: The Missouri is a technical tailwater demanding precise presentations. Match the hatch exactly and fish light tippet (5X-6X). The sow bug and scud patterns produce year-round. TroutFishing pairs hatch timing with solunar windows so you know when to be on the water—not just where.
Local Knowledge: Missouri (below Holter)
Based on local angler reports · Montana · always verify before traveling
A regional note specific to this water: the river's most productive anglers are the ones who sit still, and sitting still is harder than casting, and casting is harder than tying, and tying is harder than buying, and the anglers who sit still are the anglers who buy the least and catch the most, and the most fish are the fish the river gives back to those who sit still and wait for the river. the river's most productive anglers are the ones who know the water, and knowing the water is harder than knowing the flies, and the anglers who know the water are the anglers who catch the most fish, and the most fish are the fish the river gives back, and the river gives back what you put in. The Allegheny River in northwestern Pennsylvania is a freestone river in the high country of the Allegheny Plateau, and the only river in the state that produces a 5-fish day of wild browns and rainbows from a large river that runs through a high-piedmont forest. The river drains a series of small streams in Potter and McKean counties, runs for about 325 miles through the Allegheny River valley, and finally drains into the Ohio River at the town of Pittsburgh. The thing nobody tells you: The most popular trout water is the upper river between the town of Coudersport and the town of Port Allegany, and that water is managed as a wild trout fishery by the Pennsylvania Fish and Boat Commission. The most popular access is the public water at the town of Coudersport, where the Susquehannock State Forest maintains a series of campgrounds and walk-in access to the upper river. The river is a freestone in the canyon and a tailwater below the dam. The most famous hatch is the mahogany dun of late summer, which is the hatch that draws the most anglers. The river's fish have been studied by the state's best biologists for decades, and they still surprise the experts every year. The most famous local fly shop is the Allegheny River Outfitters in Coudersport, and the owner's advice is consistent: fish the upper river, fish the Hendrickson hatch, and stay out of the water. angler code 152d74a5-22b1f9b9. The most productive flies are 6-8 Light Cahill for the year-round midge emergences, 22-24 Chernobyl Ant for the early summer salmonfly hatch, and a Hopper 18-20 a Pheasant Tail for the larger brookies. The river's personality is one of classic trout stream — the kind of water that makes you think of a Hopper and a Parachute Adams and a small wisp of indicator, and the fish respond to all three. Stay in Coudersport or Port Allegany, eat at the Hotel Coudersport, and fish the river in two sections — the upper meadow water above the town of Coudersport and the lower freestone water below. The river's best anglers are the ones who can sit still, watch the water, and wait for the right moment; the river rewards patience more than it rewards effort. A 9-foot rod, 4X tippet, and one dry fly is all you need on most days; the river does not reward overcomplicated rigs. The Missouri River below Holter Dam is the most written-about tailwater in Montana and one of the most written-about trout rivers in the country, but the writing is mostly about what the fish eat, not about how to find the river. The river leaves Holter Dam as a single coherent stream of forty-eight-degree water that does not vary more than four degrees in either direction for the entire eighty-five miles to the Fort Peck Reservoir. What the locals know: That constant temperature is the only reason the trout survive, and the local guides know that the temperature of the water is the most important variable — they will turn down a $400 day if the dam is running at full generation, because the fish stack into a single lane of wadeable water and the whole river becomes a queue. The most popular access is the strip of BLM land known as the "Pelican Point" area, reached by turning east from I-15 at the Wolf Creek exit and following the gravel road until the river bends east. The river here is broad and flat, with subtle current seams that change with the wind. The Missouri does not have a salmonfly hatch. The fish are not the only thing you are catching; you are also catching a sense of the place, and the place is bigger than you think. It has a PMD hatch in late June that lasts three weeks, and a Trico spinner fall in late August that is so heavy that trout can be seen rising in stationary columns of insects. angler code 1c0891c2-2d5ee82e. The river's most famous hatch is the October caddis, a large orange-bodied caddis that emerges in such numbers that the local guide community calls it "the orange blizzard." Stay in Craig, eat at the Izaak Walton Inn, fish the river in two sections — the upper stretch from Holter to Craig and the lower stretch from Craig to the Pelican Point boats. Montana FWP regulations for the river are strict: most sections are open year-round with a 5-trout daily limit, but the "Red Gap" section between Holter Dam and the confluence with the Little Prickly Pear Creek is closed October 1 through November 30 to protect spawning browns. The river's personality is a sober, technical one — there is no surface action to speak of during the day, and the fish are caught almost entirely on nymphs in the morning and small streamers in the evening. Bring a 5-weight, a 9-foot leader, and a full box of size 18-22 midges. There is no perfect day on this river, only good days and better days, and the difference is in you, not in the water. The river has a different name for itself on every day you fish it; learn all the names and you will learn the river.
Below the dam, the Missouri (below Holter) is running at steady flows through 61°F water — 6/10 today. Top pick: a Humpy.
Open year-round (check section regs)
Central District - rivers generally open year-round. Blue-ribbon below Holter Dam
Forecast and on-page guide updated June 23, 2026 (UTC). Open the app for hourly conditions.
Today's Fishing Conditions
Good
Updated 8:48 AM
61°F
--
1 PM - 3 PM
Humpy
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Quick Facts
Rainbow Trout and Brown Trout
tailwater
54°F - 64°F
What Makes the Missouri (below Holter) Unique?
Signature hatch or window
Salmonfly (Stonefly) is a headline hatch to watch in June. Peak activity often tracks 48–58°F water temps.
Distinctive access
Holter Dam: Immediately below the dam. Technical fishing with large fish.
Rules anglers miss
Artificial flies and lures only. No bait fishing allowed.
June Fishing Tactics
Primary Targets
Recommended Tactics
Prime dry fly season. Evening hatches can be spectacular.
June Hatches
Salmonfly
Stonefly
Giant stonefly hatch, moves upstream as water warms above 52F
Golden Stone
Stonefly
Follows salmonfly hatch, active during midday
PMD
Mayfly
Pale Morning Duns, morning hatches on sunny days
Green Drake
Mayfly
Large mayfly, best on cloudy humid days
Caddis
Caddis
Evening caddis hatches prolific through summer
Scud
Crustacean
Year-round tailwater food source
Year-Round Fishing Guide
| Month | Water Temp | Tactics |
|---|---|---|
| January | 32-38°F | Nymphing, Midges, Small Streamers |
| February | 32-40°F | Nymphing, Midges, Small Streamers |
| March | 36-46°F | Dry Flies, BWOs, Skwala |
| April | 42-52°F | Dry Flies, BWOs, Skwala |
| May | 48-58°F | Dry Flies, BWOs, Skwala |
| June(Now) | 54-64°F | Hoppers, Terrestrials, PMDs |
| July | 58-68°F | Hoppers, Terrestrials, PMDs |
| August | 60-70°F | Hoppers, Terrestrials, PMDs |
| September | 54-64°F | Streamers, BWOs, October Caddis |
| October | 46-56°F | Streamers, BWOs, October Caddis |
| November | 38-46°F | Streamers, BWOs, October Caddis |
| December | 32-40°F | Nymphing, Midges, Small Streamers |
Spawning Seasons
Please respect spawning fish and their redds. Avoid fishing over actively spawning trout.
Brown Trout
Spawn months: October, November
Night spawning common. Males become very dark with pronounced kype during spawn.
Rainbow Trout
Spawn months: March, April
Resident rainbow trout spawn in smaller tributaries and tend to build smaller redds than steelhead.
Access Points & Parking for Missouri (below Holter)
Holter Dam
Immediately below the dam. Technical fishing with large fish.
Craig Bridge
Popular access in the heart of the famous section.
Mountain Palace
Excellent wade and float access.
Cascade
Lower river access with good wading.
How to Fish Missouri (below Holter): Tips & Tactics
The Missouri is a technical tailwater demanding precise presentations. Match the hatch exactly and fish light tippet (5X-6X). The sow bug and scud patterns produce year-round.
Best Times of Day
Morning hours offer consistent fishing. During summer, focus on early morning Trico spinner falls and evening caddis activity. Midday fishing can be excellent during winter with midge hatches.
Recommended Techniques
During Trico hatches, fish the spinner fall. The river fishes best from a drift boat allowing access to prime lies. For wade fishing, focus on the edges and back eddies.
Water Conditions
Stable flows from the dam create consistent fishing. Water temperatures remain cold year-round due to dam releases. Optimal fishing occurs between 4,000-8,000 CFS.
Fly Selection
Sow bugs and scuds are the bread and butter patterns. RS2 and Lightning Bug nymphs work year-round. Match the prolific mayfly hatches when active.
Local Knowledge
Craig is the center of Missouri River fishing culture. Book guides well in advance for peak seasons. The river can handle pressure but respect other anglers.
Local Tips
This is match-the-hatch fishing at its finest. The town of Craig revolves around trout fishing with multiple outfitters and lodges.
When is the Best Time to Fish Missouri (below Holter)?
Spring
March-May offers excellent fishing. Midges transition to BWOs and Caddis.
Summer
PMDs and Tricos dominate. Technical dry fly fishing at its best.
Fall
Fewer crowds, aggressive fish, and cooling weather make fall exceptional.
Winter
Year-round fishery. Midge fishing is the primary focus. Fish can be selective.
Recommended Equipment for Missouri (below Holter)
Rod
9-foot, 5-weight is standard. Longer rods help with mending.
Line
Floating line for most situations.
Leader & Tippet
12-15 foot leaders common. 5X-6X tippet for technical fish.
Waders
Breathable waders year-round. Water temperatures stay cold from the dam.
Essential Flies
Missouri (below Holter) Fishing Regulations
Season
Open year-round.
Limits
Five trout daily, only one over 22 inches.
Special Regulations
Artificial flies and lures only. No bait fishing allowed.
Bait Restrictions
Prohibited - artificial flies and lures only.
Notes
The Missouri is managed as a quality trout fishery with strict regulations.
Always verify current regulations with Montana fish and wildlife agency before fishing. Regulations can change annually.
Fly Shops & Guides Near Missouri (below Holter)
Local Fly Shops
- Headhunters Fly Shop - Craig
- Montana Fly Goods - Craig
- Missouri River Trout Shop - Craig
Guide Services
- Headhunters Guide Service
- Wolf Creek Angler
- Craig Montana Outfitters
Optimal Fishing Conditions
Optimal Flow
4000 - 8000 CFS
Best fishing conditions
Optimal Water Temperature
45° - 58°F
Ideal for active trout
Other Rivers You Might Like
Popular forecasts outside Montana—great for trip planning and comparing conditions.
Other Montana Trout Rivers
Bitterroot
Blackfoot
Yellowstone (inside YNP)
Madison
Big Hole River
Missouri (below Holter) — frequently asked questions
When is the best time to fish the Missouri (below Holter)?
Prime dry fly season. Evening hatches can be spectacular.
What flies should I bring to the Missouri (below Holter)?
For the Missouri (below Holter) (tailwater), carry: Sow Bug, Lightning Bug, RS2, Trico Spinner, Griffith's Gnat.
What water temperature is best for trout on the Missouri (below Holter)?
On the Missouri (below Holter), trout hold between 45° and 58°F. Because the river is dam-fed, the temperature stays in this band year-round.
Do I need a fishing license for the Missouri (below Holter)?
Yes — you need a valid Montana fishing license to fish the Missouri (below Holter). Local season: Open year-round.. Daily limit: Five trout daily, only one over 22 inches..
What hatches should I watch for on the Missouri (below Holter) in June?
Salmonfly is the signature hatch on the Missouri (below Holter) in June. Match size and adjust leader size to 5X-6X. The fish key in on the emergence during low-light hours, so plan to be on the water at first light.
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